; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128-ni:1"
target triple = "wasm32-unknown-unknown"
%struct.quux = type { i32 }
%struct.blam = type <{ i32, %struct.quux }>
declare void @foo()
declare void @bar(ptr)
declare i32 @baz()
declare i32 @__gxx_wasm_personality_v0(...)
; Function Attrs: noreturn
declare void @llvm.wasm.rethrow() #0
; Test that a PHI in catchswitch BB are excluded from combining into a non-PHI
; instruction.
define void @test0(i1 %c1) personality ptr @__gxx_wasm_personality_v0 {
; CHECK-LABEL: @test0(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP0:%.*]] = alloca [[STRUCT_BLAM:%.*]], align 4
; CHECK-NEXT: br i1 [[C1:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr [[TMP0]], i32 4
; CHECK-NEXT: invoke void @foo()
; CHECK-NEXT: to label [[BB3:%.*]] unwind label [[BB4:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[TMP0]], i32 4
; CHECK-NEXT: invoke void @foo()
; CHECK-NEXT: to label [[BB3]] unwind label [[BB4]]
; CHECK: bb3:
; CHECK-NEXT: unreachable
; CHECK: bb4:
; CHECK-NEXT: [[TMP3:%.*]] = phi ptr [ [[TMP1]], [[BB1]] ], [ [[TMP2]], [[BB2]] ]
; CHECK-NEXT: [[TMP4:%.*]] = catchswitch within none [label %bb5] unwind label [[BB7:%.*]]
; CHECK: bb5:
; CHECK-NEXT: [[TMP5:%.*]] = catchpad within [[TMP4]] [ptr null]
; CHECK-NEXT: invoke void @foo() [ "funclet"(token [[TMP5]]) ]
; CHECK-NEXT: to label [[BB6:%.*]] unwind label [[BB7]]
; CHECK: bb6:
; CHECK-NEXT: unreachable
; CHECK: bb7:
; CHECK-NEXT: [[TMP6:%.*]] = cleanuppad within none []
; CHECK-NEXT: call void @bar(ptr nonnull [[TMP3]]) [ "funclet"(token [[TMP6]]) ]
; CHECK-NEXT: unreachable
;
bb:
%tmp0 = alloca %struct.blam, align 4
br i1 %c1, label %bb1, label %bb2
bb1: ; preds = %bb
%tmp1 = getelementptr inbounds %struct.blam, ptr %tmp0, i32 0, i32 1
invoke void @foo()
to label %bb3 unwind label %bb4
bb2: ; preds = %bb
%tmp2 = getelementptr inbounds %struct.blam, ptr %tmp0, i32 0, i32 1
invoke void @foo()
to label %bb3 unwind label %bb4
bb3: ; preds = %bb2, %bb1
unreachable
bb4: ; preds = %bb2, %bb1
; This PHI should not be combined into a non-PHI instruction, because
; catchswitch BB cannot have any non-PHI instruction other than catchswitch
; itself.
%tmp3 = phi ptr [ %tmp1, %bb1 ], [ %tmp2, %bb2 ]
%tmp4 = catchswitch within none [label %bb5] unwind label %bb7
bb5: ; preds = %bb4
%tmp5 = catchpad within %tmp4 [ptr null]
invoke void @foo() [ "funclet"(token %tmp5) ]
to label %bb6 unwind label %bb7
bb6: ; preds = %bb5
unreachable
bb7: ; preds = %bb5, %bb4
%tmp6 = cleanuppad within none []
call void @bar(ptr %tmp3) [ "funclet"(token %tmp6) ]
unreachable
}
; Test that slicing-up of illegal integer type PHI does not happen in catchswitch
; BBs, which can't have any non-PHI instruction before the catchswitch.
define void @test1() personality ptr @__gxx_wasm_personality_v0 {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: invoke void @foo()
; CHECK-NEXT: to label [[INVOKE_CONT:%.*]] unwind label [[CATCH_DISPATCH1:%.*]]
; CHECK: invoke.cont:
; CHECK-NEXT: [[CALL:%.*]] = invoke i32 @baz()
; CHECK-NEXT: to label [[INVOKE_CONT1:%.*]] unwind label [[CATCH_DISPATCH:%.*]]
; CHECK: invoke.cont1:
; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp eq i32 [[CALL]], 0
; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[AP_0:%.*]] = phi i8 [ 1, [[IF_THEN]] ], [ 0, [[INVOKE_CONT1]] ]
; CHECK-NEXT: invoke void @foo()
; CHECK-NEXT: to label [[INVOKE_CONT2:%.*]] unwind label [[CATCH_DISPATCH]]
; CHECK: invoke.cont2:
; CHECK-NEXT: br label [[TRY_CONT:%.*]]
; CHECK: catch.dispatch:
; CHECK-NEXT: [[AP_1:%.*]] = phi i8 [ [[AP_0]], [[IF_END]] ], [ 0, [[INVOKE_CONT]] ]
; CHECK-NEXT: [[TMP0:%.*]] = catchswitch within none [label %catch.start] unwind label [[CATCH_DISPATCH1]]
; CHECK: catch.start:
; CHECK-NEXT: [[TMP1:%.*]] = catchpad within [[TMP0]] [ptr null]
; CHECK-NEXT: br i1 false, label [[CATCH:%.*]], label [[RETHROW:%.*]]
; CHECK: catch:
; CHECK-NEXT: catchret from [[TMP1]] to label [[TRY_CONT]]
; CHECK: rethrow:
; CHECK-NEXT: invoke void @llvm.wasm.rethrow() #[[ATTR0:[0-9]+]] [ "funclet"(token [[TMP1]]) ]
; CHECK-NEXT: to label [[UNREACHABLE:%.*]] unwind label [[CATCH_DISPATCH1]]
; CHECK: catch.dispatch1:
; CHECK-NEXT: [[AP_2:%.*]] = phi i8 [ [[AP_1]], [[CATCH_DISPATCH]] ], [ [[AP_1]], [[RETHROW]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[TMP2:%.*]] = catchswitch within none [label %catch.start1] unwind to caller
; CHECK: catch.start1:
; CHECK-NEXT: [[TMP3:%.*]] = catchpad within [[TMP2]] [ptr null]
; CHECK-NEXT: [[TOBOOL1_NOT:%.*]] = trunc i8 [[AP_2]] to i1
; CHECK-NEXT: br i1 [[TOBOOL1_NOT]], label [[IF_END1:%.*]], label [[IF_THEN1:%.*]]
; CHECK: if.then1:
; CHECK-NEXT: br label [[IF_THEN1]]
; CHECK: if.end1:
; CHECK-NEXT: catchret from [[TMP3]] to label [[TRY_CONT]]
; CHECK: try.cont:
; CHECK-NEXT: ret void
; CHECK: unreachable:
; CHECK-NEXT: unreachable
;
entry:
invoke void @foo()
to label %invoke.cont unwind label %catch.dispatch1
invoke.cont: ; preds = %entry
%call = invoke i32 @baz()
to label %invoke.cont1 unwind label %catch.dispatch
invoke.cont1: ; preds = %invoke.cont
%tobool = icmp ne i32 %call, 0
br i1 %tobool, label %if.then, label %if.end
if.then: ; preds = %invoke.cont1
br label %if.end
if.end: ; preds = %if.then, %invoke.cont1
%ap.0 = phi i8 [ 1, %if.then ], [ 0, %invoke.cont1 ]
invoke void @foo()
to label %invoke.cont2 unwind label %catch.dispatch
invoke.cont2: ; preds = %if.end
br label %try.cont
catch.dispatch: ; preds = %if.end, %invoke.cont
; %ap.2 in catch.dispatch1 BB has an illegal integer type (i8) in the data
; layout, and it is only used by trunc or trunc(lshr) operations. In this case
; InstCombine will split this PHI in its predecessors, which include this
; catch.dispatch BB. This splitting involves creating non-PHI instructions,
; such as 'and' or 'icmp' in this BB, which is not valid for a catchswitch BB.
; So if one of sliced-up PHI's predecessor is a catchswitch block, we don't
; optimize that case and bail out. This BB should be preserved intact after
; InstCombine and the pass shouldn't produce invalid code.
%ap.1 = phi i8 [ %ap.0, %if.end ], [ 0, %invoke.cont ]
%tmp0 = catchswitch within none [label %catch.start] unwind label %catch.dispatch1
catch.start: ; preds = %catch.dispatch
%tmp1 = catchpad within %tmp0 [ptr null]
br i1 0, label %catch, label %rethrow
catch: ; preds = %catch.start
catchret from %tmp1 to label %try.cont
rethrow: ; preds = %catch.start
invoke void @llvm.wasm.rethrow() #0 [ "funclet"(token %tmp1) ]
to label %unreachable unwind label %catch.dispatch1
catch.dispatch1: ; preds = %rethrow, %catch.dispatch, %entry
%ap.2 = phi i8 [ %ap.1, %catch.dispatch ], [ %ap.1, %rethrow ], [ 0, %entry ]
%tmp2 = catchswitch within none [label %catch.start1] unwind to caller
catch.start1: ; preds = %catch.dispatch1
%tmp3 = catchpad within %tmp2 [ptr null]
%tobool1 = trunc i8 %ap.2 to i1
br i1 %tobool1, label %if.then1, label %if.end1
if.then1: ; preds = %catch.start1
br label %if.end1
if.end1: ; preds = %if.then1, %catch.start1
catchret from %tmp3 to label %try.cont
try.cont: ; preds = %if.end1, %catch, %invoke.cont2
ret void
unreachable: ; preds = %rethrow
unreachable
}
attributes #0 = { noreturn }
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